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ADuM4472 Primary side: 5V power and 3V3 digital, Secondary side: all 5V

Question asked by perla on Aug 25, 2014
Latest reply on Aug 26, 2014 by perla

I would like to use this powerfull IC in the following configuration:


Primary side voltages:

  • IC power supply (Pin#8 Vdda): 3V3
  • Transformer power supply (Center tap): 5V

Secondary (isolated) side voltages:

  • 5V

I would like to achive:

  • 5V to 5V power isolation (with 2,5W output power!)
  • Data isolation between 3V3 digital primary side and 5V digital secondary side


(So basically I will use this chip in its 3V3 / 5V configuration, but with a separate 5V power supply for the transformer (1CT:2CT) on the primary side to get the 2,5W output power rating.)


Can somebody confirm that this IC is capable of this operation?

Thank you very much for any help in advance!


Best regards,